Hot water heater



I June-9, 1931.

c. H. MoRRow Ho'r WATER HEATER Filed Nay 27. 1929 INvEm-o C.: Avr/vc; h. Home o w 94 mms Patented .lune 9, 19,31l

UNITED STATESPATNT OFFICE l QLARENCE I-I. MORROW, F CLEVELAND, GHIO, ASSIGNOR TO THE HOTSTRELAIV I-IEA'l-ERV COMPANY, 0F CJHO, A :CORPORATION 0F OHIO AHo'r WATERYHEATER n ppiicmionvaied May a?, ieaafseriai No. 366,377.y

This invention relates to hot water heaters,y

its `object beingto provide a very simple and inexpensive heater designed for convenient attachment to a receptaclefor yheating or P maintaining the temperature. of the water or other liquid therein.y

Further objects of the invention are in part obvious and in part will appear more in detail hereinafter.

In the drawings, which represent one einbodiment of the invention, Fig. l is aseotional elevation illustrating the heater attached to'a receptacle; Fig. 2 is a sectional elevation on approximately the line 2-2,

Fig. l; and Fig. 3 is a sectional plan view on the line 3 3, Fig; 2.

Experience has shown that it is frequently desirable to provide certain kinds vof receptacles or containers for holding liquid with means for heating the liquid therein or for maintaining its temperature. One such instance, referred to yfor convenience'and not in any sense of limitation, is the modern domestic washing machine, which frequently comprises a tubor container for the liquid made, let us say, of sheet copper or the like,

with the desirability onthe part of the housewife to maintain the water hot -in the tub during the washing operation while vthe agitator is moving the clothes through the soapy water or other detergent. The present invention supplies a domestic heater which can be readily attached to such a washing machine tub or other container and nevertheless is very inexpensive, quite siinpleto operate and y exceedingly 'durable `and rigid in its construction.

In the drawings l represents more or less conventionally a portion of a washing machine tub, which may be assumed tov be of relatively thin sheet metal. The heater includes as an essential element a coil or other member for circulating the water toa heating medium, such as a flame, and, as is usual, -said member must communicate with the container at two different levels to provide a lthermal circulation system. The present heater therefore lcomprises a suitablewater circulating member, such as the copper` coil 2, consisting of a copperk pipe wound iii spiral form with-its ends terminating4 in threadedmembers 3 to which simplethreaded sleeves 4 are connected.; The sleeves maybe simplyl threaded'into the members 3 or brazed, soldered or otherwise secured thereto in such manner as to avoid the production 'of leaks upon rise in temperature. Upon said fittings 4 arethrea'ded inner and kouter nuts 5, 6. TheV attachment of the heater to thetuby 1 Vis effected by cutting, boring or otherwise pro-` ducing the two vnecessary openings throughv ywhich the fittings 4 are'i'nserted, and the nut-sv 5 are drawn up tight on opposite sides to" compress the sealing washers or gaskets 7 against the wall of the tank and effect a tight sealor joint. Associated withthe coil is' a suitable Vcasing'or jacket and means for supporting a l burner or heater so as to produce av chimney f; The casing or acket of the, present heater l includes abackboiie or spine member 8, Fig.

y2, which may be of any suitable form for the pui'pose,butis shown as a. cast metal member having its rear surface curvedin cylindricalv rorin and provided 'with fupper and 'lower' openings Q'through which the members 3 eX- tend. The wall or member 8 around said openings is ,preferablymorefor less flat, as at l0, Fig. 3, to form aseat for shoulders at the yends of members 3, so that the latter can be clamped to thel "spinaor` backbone by the clamping nuts ll'. Also, member 8 is providedV -with longitudinalribs -12'which are more or lessstraight and lie directly opposite Athe straight sidewalls 13 of'members 3 and form stops vor abutinentszto prevent rotation of saidmembers when `he nuts l1, 5 and 6 are loo.

turned up either in assembling the heater itself or in attaching it to the tub.

The entire coil is surrounded by a casing or jacket 14, which may be of suitable thin metal, preferably of two plies with a layer l5 of heat insnlating `rriateria-l such as asbestos therebetweemandprovided -with an open bote tom and top, the latter being closed ,when desired b` a detachable cover 1.6 having a knob 17. T is sheet metal jacket has openings through which the fittings l e-Xtend and it is clamped iirmly in position and supported by said fittings between the spine or backbone 8 and the clamping nuts ll before referred to. The acketmay also be provided with lower and upper openings 18, 1 9 for air and. gas cirT cnlation.

The lower end of the spine or backbone 8 is provided with a forwardly extending bracket portion ,20 reinforced by a rib 2l and pierced .at its .forward end at approximately the Central axis. of the heater to receive a bolt 22 for clamping a sutable heater in position beneath the coil, such the gas burner 23 of ordinary form., pro-vided with a Bnnsen mix.- er 24 and e valved gas connection 2 5. The bolt 22 may be loosened and the burner turned around the central axis to lead its gas supply to it trom any desired direction, Y In use of the device where there is no dan ger from gas fumes the cover 16 may be applied and air enters the bottoni of the casing' around the burner and through the openings.

. 18 and posses out to the open` atmosphere through the openingsV 1,9. However, if desired, the cover I16f may be removed and prop.- er sections of stove pipe or other conduit iiited to the top of the Casing to conduct the Yfumes to a stack. 26 indicates e Vsuitable .baille oft generally discdike form provided with projections and otherwise suitably formed to nest and lie snugly on top of the upper turn of the spiral, to which it may be wired it necessary. This baille compels the heated products of combustion topass outwardly between the turns of the spiral rather than `directl through the open top of the coil. f

This heater is of very simple form but possesses all the attributes and requirements of the'moieexpensive domestic hot water heaters designed for storage tanks. At very small cost it includes a quite rigid structure which may be readily attached I to a thin Walled, tank for maintaining the temperature ofthe water therein. Other advantages will be apparent to those skilled in the art.

What I claim is:

l. A water heater especially adapted for use with a water containing device having a relatively light sheet metal wall on which said heater is adapted to be mounted, comprising a Water circulatingY member having one-piece terminal members secured on the" two ends thereof, cachot ,said terminal lmembers having a threaded end portion adapted to extend through an opening in the supporting wall of said device and to receive a securing nut, whereby said circulating member can be mounted on said wall of said device, a rela.- tively light sheet metal casing enclosing said circulating member and provided with a pair of openings through which said terminal members extend, and a relatively heavy barlike member extending vertically along the inner surface of said casing and provided Wiah a 'pair ci openings registering with the openings of said casing and through which extend the terminal members of said water circulating member, said bar-like member providing a sturdy and rigid support for said terminal members in said casing.

2. A water heater especially adapted for use with a water containing device having a relatively light sheet metal wall on which said heater is mounted, comprising ai water circulating member having terminal members provided with threaded portions adapted to extend through openings in the supporting wall of said device and carrying clamping nuts, a rigid device connecting said terminal members, a casing enclosing said device and said circulating member and having openings through which the threaded portions of said terminal members extend, said rigid device being provided at its lower end with a bracket and a burner mounted on said bracket and rotatably adjustable about the central axis of said water circulating member'.

4In testimony whereoic hereby ai'hX my signature.

CLARENCE H. MORROVV. 

